how to troubleshoot B1235 code in Honda Civic 11th Generation (2022-Present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent any electrical shorts or accidental airbag deployment during repair.

2. Inspect and Repair Wiring

• Sub-steps:
  • Visually inspect the wiring harness connected to the seat belt tensioner and pretensioner for damage or corrosion.
  • If damage is found, repair or replace the affected wiring using appropriate connectors and soldering techniques.
  • Ensure all connections are secure and free of moisture.

3. Test and Replace Seat Belt Tensioner

• Sub-steps:
  • Use a multimeter to measure the resistance of the seat belt tensioner. Compare readings to specifications in the service manual.
  • If the resistance is out of specification, remove the old seat belt tensioner:
    • Unbolt the tensioner from its mount using a socket set.
    • Disconnect the electrical connector.
  • Install the new seat belt tensioner by reversing the removal steps, ensuring it is properly secured and connected.

4. Reconnect Battery and Clear Codes

• Sub-steps:
  • Reconnect the negative battery terminal.
  • Use the OBD-II scanner to clear the B1235 code from the vehicle's computer.
  • Conduct a system check to ensure there are no new error codes.